Observer-based stator-flux-oriented vector control of cycloconverter-fed synchronous motor drive

Author

Das, Shyama P. ; Chattopadhyay, Ajit K.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Kharagpur, India

Volume

33

Issue

4

fYear

1997

Firstpage

943

Lastpage

955

Abstract

A six-pulse noncirculating-current cycloconverter-fed synchronous motor with stator-flux-oriented vector control for high-power and low-speed applications is discussed here. Vector control is achieved by stator flux estimation through a novel closed-loop reduced-order observer exhibiting stable speed regulation. Variable displacement factor operation is incorporated to keep both the system current continuous and the system utilization optimum. A simple method is used in designing the controller for armature current regulation with good performance. A generalized digital simulation of the drive system is made, and the simulation results are validated by a low-cost laboratory implementation of the drive with a 386DX PC-based system with 80387 floating point support

Keywords

closed loop systems; control system analysis computing; control system synthesis; cycloconvertors; electric machine analysis computing; machine control; machine testing; machine theory; magnetic flux; microcomputer applications; observers; parameter estimation; stability; stators; synchronous motor drives; variable speed drives; velocity control; 386DX PC; 80387 floating point support; applications; armature current regulation; closed-loop reduced-order observer; computer simulation; control design; control performance; control simulation; six-pulse noncirculating-current cycloconverter; stable speed regulation; stator flux estimation; stator-flux-oriented vector control; synchronous motor drive; variable displacement factor operation; Drives; Electronics industry; Machine vector control; Milling machines; Samarium; State estimation; Stators; Steady-state; Synchronous motors; Torque;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.605736

Filename

605736